SIMCOM SIM900A. It belongs to the dual-band GSM / GPRS module, full SMT package form, its stable performance, the appearance of compact, cost-effective, can meet your various needs.

SIM900A industry-standard interface, the operating frequency for the GSM / GPRS 850/900/1800/1900MHz, can achieve low-power voice, SMS, data and fax transmission of information. In addition, SIM900A the size of 24x24x3mm, M2M applications can be applied to various types of design requirements, especially for compact design.


Key Features
* Dual-band 900 / 1800 MHz
* GPRS multi-slot class 10 / 8
* GPRS mobile station class B
* Meet the GSM 2 / 2 + standards
- Class 4 (2 W @ 900 MHz)
- Class 1 (1 W @ 1800MHz)
* Size: 24 x 24 x 3 mm
* Weight: 3.4g
* Control via AT commands (GSM 07.07, 07.05 and
SIMCOM enhanced AT command set)
* SIM application toolkit
* Supply voltage range: 3.2 ... 4.8V
* Low power: 1.5mA (Sleep Mode)
* Operating temperature range: -40 ° C to +85 ° C

Fax
* Group 3, class 1

Data transmission
* GPRS class 10: Maximum 85.6 kbps (downlink rate)
* Support PBCCH
* Coding schemes CS 1, 2, 3, 4
* CSD up to 14.4 kbps
* USSD
* Non-pass through
* PPP-stack

SMS
* Point to point MO and MT
* SMS Broadcasting
* Text and PDU mode


Software Features
* 0710 MUX protocol
* Embedded TCP / UDP protocol
* FTP / HTTP (2010  achieved by July)

Enhanced software features
* FOTA (2010  achieved by July)
* MMS (2010  achieved by July)
* Embedded AT (2010 Q3 to achieve)


Voice
* Tricodec
- Half rate (HR)
- Full rate (FR)
- Enhanced Full Rate (EFR)
* Support for echo cancellation algorithm
* AMR
- Half rate (HR)
- Full rate (FR)

Interface
* Support SIM card 3V / 1.8V Interface
* Analog audio interface
* Support for RTC
* SPI Interface
* Serial interface
* Antenna pad
* I2C
* GPIO
* PWM
* ADC

Compatibility
* AT cellular command interface

Certification:
* ROHS
* TA
* REACH